Collapsible cartons



July 23, 1957 K. r. BUTTERY COLLAPSIBLE CRTONS 2 Sheets-Shree?. 1

Filed Oct. 5. 1953 July' 23, 1957 K. T. BUTTERY 2,800,250

coLLAPsIBLE cARToNs 2 Shets-Sheet 2 Filed oct. s. 195s fifa/wr UnitedStates Patent O COLLAPSIBLE CARTONS Kenneth T. Buttery, Kalamazoo,Mich., assignor to Sutherland Paper Company, Kalamazoo, Mich.

Application October 5, 1953, Serial No. 384,056

3 Claims. (Cl. 220-113) This invention relates to collapsible cartons,particularly cartons adapted as carriers.

The main objects of this invention are:

First, to provide a collapsible handled carton which may be formed ofrelatively light paperboard stock and at the same time is capable ofcarrying loads of considerable Weight.

Second, to provide a collapsible carton which may be very economicallyproduced both inthe matter of material and in manufacturing to produce acarton in the ilat or knockdown, which may be quickly set up for use.

Further objects, and objects relating to details and economies of theinvention will appear from the description to follow. The invention isdefined and pointed out in the claims. v

A preferred embodiment of the invention is illustrated in theaccompanying drawing, in which:

Fig. 1 is a perspective View of a carton embodying the invention withportions of the wall of one compartment broken away to show structuraldetails.

Fig. 2 is a plan view of the collapsed carton, certain concealed partsbeing shown by dotted lines.

Fig. 3 is a top end view of the carton in collapsed form.

Fig. 4 is a fragmentary perspective view illustrating the relation ofthe parts at one stage in the erection of the carton.

Fig. 5 is a fragmentary bottom perspective view.

Fig. 6 is a plan view of the blank with adhesive indicated on partsthereof.

Fig. 7 is a fragmentary plan view illustrating the rst folding step andcertain of the parts with adhesive thereon.

Fig. 8 is a fragmentary plan view of the folded blank illustrating thenal step.

The embodiment of my invention illustrated is a carrier carton forcarrying bottles, cans and the like and has two compartments. Animportant advantage of my invention is that the carton may be formedintegrally of paperboard cut and scored and produced in collapsed formby simple gluing and folding operations readily performed by machines.The structure comprises two complementary units, each unit comprising anend wall 1, side walls 2 hingedly connected to the end wall as by thescores 3, a partition member 4 is hingedly secured at 5 to the inneredge of one of the side walls, and a sealing ilap 6 hingedly secured at7 to the inner edge of the other side wall. The partition members of theunits are hingedly connected to each other at 8 while the sealing aps 6of the units are hingedly connected to each other at 9. Theseconnections 8 and 9 form the sole connections for the units in theextended blank. Complementary bottom members 10 and 11 are hingedlysecured to the bottom edges of the end walls at 12. The bottom member 11is provided with a sealing ilap 13 hingedly secured thereto at 14.Adhesive is indicated at 15.

The sealing flaps 6 are lapped upon and adhesively secured to thecorresponding partition members 4, the

ice

adhesive being indicated at 16. The diagonally foldable bottom flaps 17are hingedly connected at 18 to the bottom edges of corresponding sidewalls and hingedly connected at 20 to the adjacent edges of the bottommembers. These bottom flaps have tabs 21 which are folded upon andadhesively secured to the inner sides of the bottom members. Thepartition members are Afolded upon each other in back to back relationand adhesively secured, preferably from top to bottom thereof, byadhesive indicated at 22.

The sealing aps 6 are provided with downwardly projecting bottomengaging lugs 23 which engage the edges of the recesses 24 when thecarton is fully erected. These recesses or cut away portions permit theengagement of the lugs with the walls fully erected. The bottom flapsfacilitate the swinging of the bottom to erected position and theengagement of the lugs 23 with the bottom as is best illustrated in Fig.5.

The carton, folded and glued in the ilat as shown in Fig. 3 may beerected by pressure on the opposite edges of the folded structure, whileallowing the walls to swing upon their hinged fold connections 8 and 9so that they,V

are secured together by the adhesive 22 applied to the rear side of oneof them. The bottom flap 13 is then adhered, which results in thecollapsed structure shown in Fig. 3. Y

The upper edges 25 of the walls 1 and 2 are preferably substantiallyseparated in the blank as shown `so that When the carton is erected thepartition projects above the walls facilitating grasping of the handhold 26, which is formed by the slits 27. The slits result in tongues 28which may be swung to one side to open the slots 26 and form a bettergripping edge. The handled partition member is relatively stiff. Thebottom is reinforced and supported by the bottom flaps and the bottomsupporting lugs. The structure is strong and quite rigid even whenformed of relatively light stock.

I have illustrated and described my invention in a practical commercialform. While the cartons are especially desirable as carrier cartons,they are also desirable for general use as collapsible packagingcartons, in which case the side and end walls would ordinarily not becut away in their upper edges as shown at 25 in Fig. 6.

I have not illustrated or described such modifications as it is believedthat this disclosure will enable those skilled in the art to embody oradapt my invention as may be desired.

Having thus described the invention, what is claimed as new and isdesired to be secured by Letters Patent is:

l. A collapsible two-compartment carton formed of an integral blank andcomprising, a pair of end walls aligned in the blank, a side wallhingedly connected to each side edge of the end walls, said side wallsbeing disposed in the blank in aligned pairs, partition members alignedin the blank and hingedly connected to the vertical edges of one alignedpair of said side walls and foldably connected to each other at theirupper ends, side wall attaching flaps aligned in the blank and hingedlyconnected to the vertical edges of the other aligned pair of side wallsand foldably connected to each other at their upper ends, said partitionmembers being folded on their said foldable connection and iixedlysecured together I Patented July 23, 1957 in back-to-'back relation,said `side wall attaching flaps being fixedly secured to said partitionmembers, and a bottom unit comprising complementary bottom membershingedly yconnected to the bottom edges of the end Walls, one bottommemberY having an attaching apfhingedly connected to its swinging endand flXedly connected to the swinging end of the other bottom member,and diagonally foldable `.bottom flaps hingedly connected to the bottomedges of one aligned pair of side walls and to the adjacent edges ofadjacent bottom members, said bottom aps having tab portions lapped uponand xedly secured to the inner sides of the bottom members to which saidbottom flaps are hingedly connected, said side Wall atE taching flapshaving inwardly facing lugs on theirl lower carton is erected.

2. A collapsible two-compartment `carton formed ofV an integral blankand comprising, a pair of yend wallsv aligned in the blank, a side wallhingedly connected to each side edge of the end walls, said side wallsbeing disposed in the blank in aligned pairs, partition members alignedin the blank and hingedly connected to the vertical edges of one alignedpair of said side walls and foldably connected to each other at theirupper ends, side Wall attaching flaps aligned in the blank and hingedlyconnected to the vertical edges of the other aligned pair of side wallsand foldably connected to each other at their upper ends, said partitionmembers being folded on their said foldable connection and iixedlysecured together in back-to-back relation, said vside Wall attachingflaps being fixedly secured to said partition members, and a bottom unitcomprising complementary bottom members hingedly connected to the bottomedges of theend walls, one bottom member having an attaching ap hingedlylconnected to its swinging ,end and ixedly` connected to the swingingend of the other bottom member,V

tothe bottom edges of one aligned pair of side walls and to the adjacentedges of adjacent bottom members, said bottom aps having tab portionslapped upon and ixedly secured to the inner sides of the bottom membersto which said bottom aps are hingedly connected.

3. A collapsible two-compartment carton comprising, a pair of end walls,pairs of side walls hingedly connected to the side edges of the endWalls, partition members hingedly :connected to the inner edges of onepair of said side walls and xedly secured together in back-to-backrelation, `side wall attaching ilaps hingedly connected toV one alignedpair of side Walls and to the adjacent edgesof adjacent bottom members,said bottom flaps having tabportions lapped Vupon and ixedly secured tothe inner sides of the bottom members to which said bottom aps arehingedly connected, said side wall attaching ilaps having a lug at theirlower ends supportingly engaging said bottom llnit when the carton iserected.

IReferenes Citedin the le of this patent UNITED STATES PATENTS 732,071Hartrampf lune 30, 1903V 801,579 Flora et al. Oct. 10, 1-905 2,537,615Arneson Ian. 9, 1951 2,555,655 Painter June 5,' 1951 2,576,179 Holy Nov.27, 1951 2,630,264 Holy Mar. 3, 1953 2,652,968 Bolding Sept. 22, 19532,756,900 Collura July 31, 1956

